MacDon M155 Operators Manual - Manual (Page 204)

OPERATION
7. Push down on rod end of link cylinder (B), until hook
engages pin on header and is locked.
IMPORTANT:
Hook release must be down to enable self-locking
mechanism. If the release is open (up), manually
push it down after hook engages header pin.
8. Check that center-link (A) is locked onto header by
pulling upward on rod end (B) of cylinder.
Figure 4.178: Hydraulic Center-Link
CAUTION
Check to be sure all bystanders have cleared the area.
9. Start engine and press the HEADER UP switch (A) to
raise header to maximum height.
NOTE: If one end of the header does NOT raise fully,
the lift cylinders require rephasing. If rephasing
is needed, proceed as follows:
a. Press and hold the HEADER UP switch until
both cylinders stop moving.
b. Continue to hold the switch for 3–4 seconds.
Cylinders are now phased.
Figure 4.179: GSL
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Revision A